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(No Model.) 3 sheets-Sheet 1. P. J. HOLLOWAY. APPARATUS FOR REPLACINGBELTS UPON PULLEYS.

No. 440,862. Patented Nov. 18, 1890.

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APPARATUS FOR REPLACING BELTS UPON PULLEYS. No. 440,862. I Patented Nev.18, 1890.

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(No Model.) 3 Sheets--Sheet 3. P. J. HOLLOWAY.

APPARATUS FOR RBP LAOING BELTS UPON PULLEYS. No. 440,862. N N PatentedNov. 18, 1890.

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UNITED STATES PATENT QEFIC PHILIP JOSEPH HOLLOWAY, OF WINNINGTON,ENGLAND.

APPARATUS FOR REPLACING BELTS UPON PULLEYS.

SPECIFICATION forming part of Letters Patent No. 440,862, dated November18, 1890.

Application filed November 20, 1889. Serial No. 331,050. (No model.)

To all whom it may concern:

Be it known that I, PHILIP JosEPH HoLLo- WAY, a subject of the Queen ofGreat Britain, residing at 7 Moss Terrace, WVinnington, Northwich, inthe county of Chester, England, have invented certain new and usefulImprovements in Apparatus for Replacing Belts upon Pulleys when inMotion; andI do hereby declare that the following is a full, clear, andexact description of the invention, which will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, which form a part of thisspecification, and in which- Figure 1 is a part-sectional side elevationof my improved apparatus for replacing belts upon pulleys, showing thesame in operative position. Fig. 2 is an end elevation thereof. Fig. 3shows a modification of my improved apparatus as it is constructed forputting belts on small pulleys. Fig. 4 is an end elevation thereof.

Like letters of reference indicate corresponding parts in the severalfigures.

In the accompanying drawings, the letter A represents an existingpulley, and A an existing shaft. My improved apparatus consists in partof a quadrant or part of a quadrant B, constructed of steel orwrought-iron and having its periphery curved to the same radius as thepulley upon which the belt is to be placed. The width of the quadrant isless than the belt to be applied, the ratio being about as three andone-fourth inches is to two and three-fourths inches, varying accordingto the width and weight of the belt. On the edge of the quadrantfarthest from the beltpulley is a small flange B to prevent the beltfrom being pushed over the quadrant while being put on the pulley. Thequadrant is carried by wrought-iron or steel arms 0, made in two partsand secured with right and left handed threads. Sleeve-nuts C enable thelength of the arms 0 to be adjusted so as to enable the quadrant to putthe belt on pulleys of various diameters, if desired.

The arms 0 are screwed into a boss D of either steel, wrought-iron, orany cast metal, in which is cut a spiral groove D having a pitch equalto the overhang of the belt E on the quadrant. Formed integral with theboss D is a chain or rope pulley E for raising the quadrant with thebelt lying upon it. The size of this chain or rope pulley will dependupon the diameter of the belt-pulley and the width and weight of thebelt, and must be large enough to exert sufficient'power to raise thequadrant.

The belt is pushed toward the belt-pulley while the quadrant is beingraised by another chain or rope pulley F, (hereinafter called thepressure-pulley,) of sufficient diameter and'made in one piece, with anextended boss F, upon which is cuta thread F corresponding to the spiralgroove D in the boss D, in which it works. In order to prevent themachine moving laterally upon the loose bush G, by which the apparatusis carried when not in use, a groove is out around the inside of theboss F of the pressure-pulley, and in which groove is fitted a smallcollar G.

When, as shown in Figs. 3 and 4, it is desirable to reduce the diameterof the boss of the quadrant to the minimum on account of the smalldiameter of the belt-pulley or for any other reason, this can be done bydis pensing with the internal groove D and thread F as shown in Fig.1,and making the ends of the bosses of the quadrant and thepressure-pulley, respectively, with one thread or spiral cam H H, equalin pitch to the overhang of the belt upon the quadrant and adapted toabut against each other. In this case a spring H of one single spiralbetween the collar 1-1 of the loose bush G and the boss D of thequadrant will be required to keep the machine in gear and ready for use.

In order to facilitate the application of my improved apparatus toexisting shafts, it is conveniently made in two halves and boltedtogether, as will be understood.

The manipulation of the aforedescribed forms of my invention is asfollows: When the belt is off the pulley and required to be put on bythe attendant, the quadrant, with the belt lying upon it ready to bepicked up, is pulled round byits own chain or rope pulley into aposition ready for the belt to be pushed onto the belt-pulley, which isaccomplished by pulling round the pressure-pulley in a contrarydirection. This action causes the groove and thread or butting threads,

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as the case may be, to unscrew in one halfrevolution of each a totaldistance equal to the overhang of the belt on the quadrant, whichdistance the belt is now on the pulley and is left to climb theremainder of its own width. In order to prevent the quadrant belngcarried round with the shaft when the belt is being tightened on thepulley, the quadrant is beveled inward from the edge to the flange, asshown in the drawings. The attendant is quite out of danger, as thechains or ropes can be carried to any point, and the speed of the engineneed not be slackened during the operation.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States 1. An apparatus for putting belts onpulleys, consisting of the quadrant B, made of a band of metal having aflange B, arms 0, made of two parts, the one part of each being securedto the quadrant B, the other part screwed into the boss D, and bothparts of each made adjustable and secured together by the sleeve-nut O,the chain-wheel E, formed integral with the boss D, having an internalspiral groove D, the pressure-pulley F, integral with the extended bossF, formed with a thread F adapted to engage with the groove D, and agroove in the boss F, in which is fitted the ring G, adapted to keep thepressure-pulley in place, and the loose collar G, all arranged incombination, substantially as and for the purpose hereinbefore set forthwith reference to Figs. 1 and 2 of the drawings hereunto annexed.

2. An apparatus for putting belts on pulleys, consisting of the quadrantB, arms 0, sleeve-nuts C, chain-pulley E, formed integral with a bossmade with a spiral cam H, pressu re-pulleyF, formed integral with a bossF, made with a spiral cam 1-1, adapted to engage with the spiral cam H,the spring H in compression between the collar H and the boss D, and theloose collar G, carrying the mechanism, all arranged in combination,substantially as and for the purpose hereinbcfore set forth withreference to Figs. 3 and 4 of the drawings hereunto annexed.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

PHILIP JOSEPH HOLLOWAY. Witnesses:

GEORGE DUKES,

7 8 La'ndseer Road, Et erton, Liverpool.

WALTER LUPTON,

29 Gut'lford Street, Everton, Liverpool.

